Safety-envelop.



R. HASEL.

SAFETY ENVELOP. APPLIOATIOK FILED rmm'lsoe.

Patented Nov. 9, 1909.

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939,949, Patented Nov. 9, 1909.

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ATTORNEYS UNTE snares PATENT fiFFiCE.

RICHARD HASEL, OF NEW YORK, N. Y., ASSIGNOR F ONE-THIRD TO GUSTAVBONNECK AND ONE-THIRD TO HERMAN H OTZ, BOTH OF NEW' YORK, N. Y.

SAFETY-ENVELOP.

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Specification of Letters Patent.

Patented Nov. 9, 1909.

Application filed February 15, 1909. Serial No. 477,895.

To all whom it may concern:

Be it known that I, RICHARD HAsEL, a citizen of the United States, and aresident of the city of New York, borough of Manhattan, in the countyand State of New York, have invented a new and Improved Safety-Envelop,of which the following is a full, clear, and exact description.

My invention relates to safety envelops, my more particular purposebeing to provide an envelop of such character that its various portionspossess gummed surfaces, the arrangement of the various gummed surfacesbeing such that when the envelop is once sealed, the contents can not bereached except by mutilating several layers of paper, disposed one uponthe other and-thoroughly bonded together.

My invention further relates to the provision of an envelop providedwith slots and with a flap to be bent over and inserted through theslots, the flap being provided with a detachable portion which, whenonce removed, increases the difficulty of opening the envelop withoutdetection.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of the blank used in making my improved envelop,this blank being provided with various score lines and slots; Fig. 2 isa plan view of the same blank after the side panels are bent over and secured together; Fig. 3 is an enlarged central section on the line 38 ofFig. 2, looking in the direction of the arrows; Fig. 4- is a plan viewof the envelop complete and ready to be sealed, the flap being partiallyinserted within the slot made to receive it; Fig. 5 is a plan View ofthe envelop, showing the flap as inserted completely through the slotand the detachable portion of the flap ready to be removed; and Fig. 6is an enlarged sectional view upon the line 6-6 of Fig. 5, looking inthe direction of the arrows.

The blank shown in Fig. 1 comprises a back panel 7, end panels 8, 9, andside panels 10, 11, the various panels being separated by score lines12, 13, 13 13 The end panel 8 is provided with a slot 14 and the sidepanel 11 with a slot 15. The end panel 9 is provided with a shoulder 16and with a flap 17, this flap being of proper size to enter the slot.14. The [iap 10 is provided with a gummed surface 18 and is furtherprovided with a detachable tip 19 integral with the flap but separatedtherefrom by a score line 20. The side panel 11, which has generally theform of a flap, is provided around its outer edge with a gummed surface21, and is furth r provided wit-h another gummed surface he blank isprovided with a slot disposed close to the score line 13 and of propersize to receive the detachable tip 19. The flap 10 is provided with agummed surface 2st (see Fig. 4:) disposed opposite the gummed surface18. That is to say, when the flap 10 occupies the position indicated inFig. at, the inner face of this flap is provided -with the gummedsurface 18 and its outer face with the gummed surface 24:.

The blank shown in Fig. 1 being completed, the end panel 8 is bent overupon the panel 7 and the panel 9 is bent in the opposite direction so asto cover the panel 8. The flap 17 is moistened and inserted through theslot 14 and bent inwardly and backwardly, that is, toward the center ofthe envelop, and stuck, preferably by aid of pressure against the innerface of the panel 8, as is indicated by dotted lines in Fig. 2. The sidepanel 11 is next bent over the end panels 8, 9 and secured thereto bythe gummed surface 21, the gummed surface 22 being stuck tightly uponthe edges of the side panels 8, 9, and the shoulder 16 regis tering withone edge of the slot 15. This completes the envelop ready for themarket.

In order to close and seal the envelop, the surfaces 18, 21 and 22 aremoistened and the tip 19, together with a portion of the side panel 10integral with it, is passed into the slot and moved downwardlyintermediate the lower portions of the end panels 8, 9, so that the tip19 protrudes from the slot 23. The tip 19 is next torn off, leaving thescore mark flush with the slot 23. It is now impossible to pull the sidepanel 10 out from the slots through which it extends, and the envelopcan not be opened except by breaking through, or otherwise mutilating ordetaching, several layers of paper.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A safety envelop comprising a back panel, a pair of end panelsconnected with said back panel and adapted to overlap, one of said endpanels being provided with a slot, the other end panel being providedwith a shoulder and also with a flap, said flap being of proper size tofit into the slot of the opposite end panel, said back panel beingfurther provided with side panels, one of which has a plurality ofslots, the other having a. tongue for extending through saidlast-mentioned slots, said side panels and said end panels being sodisposed that when one of said end panels overlaps the other saidshoulder carried by one of said end panels is disposed parallel with andadjacent to the slot in one of said side panels thereby enabling saidtongue carried by the opposite side panel to be extended beneath theportion of said panel provided with said shoulder.

2. A safety envelop comprising a back panel, end panels connectedtherewith and adapted to be secured together, one of said end panelshaving a comparatively narrow portion, and a pair of side panels to be'folded over said end panels and overlapped,

one of said side panels being provided with slots which are adapted toregister with opposite edges of a portion of one of said end panels, theother of said side panels being provided with a tongue for extendingthrough said slots and beneath said narrow portion of said end panel.

3. A safety envelop comprising a back panel, a pair of end panels to beconnected together, one of said end panels having a narrow portion, aside panel provided with a gunnned edge and adapted to be secured uponsaid end panels, after the same are folded, said side panel beingprovided with slots which register with opposite edges of said narrowportion, and another side panel provided with a tongue a portion ofwhich is ginnined, said tongue being of proper length to extend intooneof said slots be neath said narrow portion and outwardly through theother of said slots.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

RICHARD HASEL.

lVitnesses HERMAN FRIOK, ERNEST H. FRIoK.

